When Sayuki was a female university student, she was attracted strongly to elderly university professor Sawada for some reason and marries while attending school. Sayuki's newlywed life began with accepting her husband's metamorphosis. After several years, Sawada, aware of a marked decline in male function, thinks of new pleasure and puts it into practice. It was to have Sasaki, an assistant who had a rumored ruthless rumor, make his wife, Sayuki, as a mid-command. Sayuki, who had initially hated, will also become Sagawa's rough training and the bondage of the cock.